Companies often offer rewards for finding security issues in their products or their own IT systems, and hackathons have a long history.
I'm just wondering if there has ever been a deliberate challenge to find a satellite? I am not sure how it could be done exactly, but an "extra" cubesat or substantial bit of debris not present in publicly available catalogs might be deployed by something invisible (the ghost of Zuma perhaps?) and then the announcement would be "There's a new undocumented satellite up there in LEO, who can find it first?"
This could also be done as an exercise or a drill by a military or government organization. This is a bit of a soft question because I don't want to overly define it and accidentally pre-exclude answers that will turn out to be interesting.
No secrets please! Use only publicly available sources of information.
Question: Has there ever been a "Find A Satellite" challenge where a new, undocumented object in LEO somehow comes to be and folks are encouraged to look for it by any means necessary?
Actually, could there be? Or would there always be some way to "cheat the system"?
note: home-made radar sets are probably strongly discouraged, but tracking based on visual sightings (wide field cameras digitally recorded) or listening to "beep beep" of beacons or telemetry are certainly possible.
this answer to Which satellite constellations are already operational in LEO (Low Earth Orbit)? got me re-reading How (the heck) are military satellites with (apparently) classified TLEs still showing up on sat map websites? and that got me wondering about this.